Updates nupic.core to 1a3a36e1bbf8e3a6ede51836f327f37857f18947.
Merge pull request #986 from numenta-ci/core-update-1a3a36e1bbf8e3a6ede51836f327f37857f18947

Updates nupic.core to 1a3a36e1bbf8e3a6ede51836f327f37857f18947.